| Variable | Frequency (N = 405) | Percentage |
| Sex |
|
|
| Male | 107 | 26.42 |
| Female | 298 | 73.58 |
| Ethnicity |
|
|
| Bantu | 391 | 96.54 |
| Nilotics | 8 | 1.98 |
| Nilo-hamites | 4 | 0.99 |
| Others | 2 | 0.49 |
| Smoking |
|
|
| Does not smoke | 396 | 97.78 |
| Smokes | 9 | 2.22 |
| Physical exercise |
|
|
| Doesn’t do physical exercise | 245 | 60.5 |
| Does physical exercise | 160 | 39.5 |
| Duration of hypertensive state |
|
|
| Less than one year | 65 | 16.05 |
| One to 10 years | 247 | 60.99 |
| Between 10 and 20 years | 54 | 13.33 |
| More than 20 years | 39 | 9.63 |
| Hypertension treatment |
|
|
| Patient on drugs | 380 | 93.83 |
| Patient not on drugs | 25 | 6.17 |
| History of Diabetes |
|
|
| Yes | 191 | 47.16 |
| No | 175 | 43.21 |
| Not sure | 39 | 9.63 |
| Eye surgery |
|
|
| No | 382 | 92.59 |
| Yes | 23 | 5.68 |
| Type of surgery (n = 23) |
|
|
| Cataract surgery | 8 | 34.78 |
| Pterygium | 4 | 17.39 |
| Others | 11 | 47.83 |
| Refractive error |
|
|
| No | 108 | 26.67 |
| Yes | 297 | 73.33 |
| Type of refractive error (n = 297) |
|
|
| Presbyopia | 289 | 97.31 |
| Myopia | 8 | 2.69 |